[INFO] fetching crate rants 0.5.0...
[INFO] testing rants-0.5.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rants 0.5.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rants 0.5.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rants 0.5.0
[INFO] finished tweaking crates.io crate rants 0.5.0
[INFO] tweaked toml for crates.io crate rants 0.5.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8918acaa151078b699fb3f66c55f43055ec37c8eb645435be61c2cb94fb3660f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8918acaa151078b699fb3f66c55f43055ec37c8eb645435be61c2cb94fb3660f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8918acaa151078b699fb3f66c55f43055ec37c8eb645435be61c2cb94fb3660f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8918acaa151078b699fb3f66c55f43055ec37c8eb645435be61c2cb94fb3660f", kill_on_drop: false }`
[INFO] [stdout] 8918acaa151078b699fb3f66c55f43055ec37c8eb645435be61c2cb94fb3660f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 577aadb6f20c87849119cd46fbe8e55760b46d4a594edc848ea2733a84135a23
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "577aadb6f20c87849119cd46fbe8e55760b46d4a594edc848ea2733a84135a23", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling rants v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.19s
[INFO] running `Command { std: "docker" "inspect" "577aadb6f20c87849119cd46fbe8e55760b46d4a594edc848ea2733a84135a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577aadb6f20c87849119cd46fbe8e55760b46d4a594edc848ea2733a84135a23", kill_on_drop: false }`
[INFO] [stdout] 577aadb6f20c87849119cd46fbe8e55760b46d4a594edc848ea2733a84135a23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2cd59d5f06684c63f821a966ea75e3774aad42e38a522541f0bb5a5451cd132c
[INFO] running `Command { std: "docker" "start" "-a" "2cd59d5f06684c63f821a966ea75e3774aad42e38a522541f0bb5a5451cd132c", kill_on_drop: false }`
[INFO] [stderr]    Compiling hostname v0.2.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling rants v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `rants`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rants --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' -C metadata=8c18f2baa758d088 -C extra-filename=-8c18f2baa758d088 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-8f475ca97d0bfeee.rlib --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-84a507a30f871ce1.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-49208ff4a13ebe2e.rlib --extern hostname=/opt/rustwide/target/debug/deps/libhostname-081aa2416a612218.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-e85f58044ae91ffe.rlib --extern nom=/opt/rustwide/target/debug/deps/libnom-31ab01704e825617.rlib --extern owning_ref=/opt/rustwide/target/debug/deps/libowning_ref-6a7e3d2f83db1ddf.rlib --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-97bb6b2caa38742a.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-423b958feecc724b.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-5d4fcf73299821e3.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-3ae487dd14adecfe.rlib --extern tokio=/opt/rustwide/target/debug/deps/libtokio-b6864d3713ed765a.rlib --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-37a79d6e07bdaa3d.rlib --extern uuid=/opt/rustwide/target/debug/deps/libuuid-a2455c98f5767243.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2cd59d5f06684c63f821a966ea75e3774aad42e38a522541f0bb5a5451cd132c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd59d5f06684c63f821a966ea75e3774aad42e38a522541f0bb5a5451cd132c", kill_on_drop: false }`
[INFO] [stdout] 2cd59d5f06684c63f821a966ea75e3774aad42e38a522541f0bb5a5451cd132c